I think the answer is 1, change ammonia into nitrates.
The correct option is A, FEEDING HABIT AND MIGRATION. From the passage given above, it can be seen that seagulls are scavengers, they usually eat from garbage dumps while wild geese eat seeds and insects, thus they differ in feeding habit. In term of migration, seagulls does not follow seasonal pattern of annual migration while wild geese do. These are the contrasts between the two birds.
A= U, G= C, T= A You can reverse it as well to find the codons
The answer is D
I hoped this helped
